Extending the control of antiferromagnetic-ferromagnetic exchange coupling on perpendicular magnetization into the soft magnetic regime

Nae Yeou Jih, Bo-Yao Wang, Yuet Loy Chan, Der Hsin Wei, Minn Tsong Lin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Antiferromagnetic-ferromagnetic exchange coupling is known for its pinning effect on the magnetic hard layer through coercivity enhancement or exchange bias. This study reports its effect on controlling perpendicular magnetization in the soft magnetic regime. In a series of Ni 78Fe 22(Py)/Mn bilayers, we demonstrate that the magnetization, coercivity, and thermal stability of perpendicular anisotropy can be controlled by varying the thicknesses of the Py and Mn layers, based on the competition between the in-plane anisotropy of the Py layer and the out-of-plane-oriented Py-Mn exchange coupling. This offers a new possibility for the design of magnetic free layers in perpendicular-based magnetic logical devices.

Original languageEnglish
Article number063008
JournalApplied Physics Express
Volume5
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

Fingerprint

Exchange coupling
Coercive force
Magnetization
Anisotropy
Magnetic devices
magnetization
coercivity
Thermodynamic stability
anisotropy
thermal stability
augmentation

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "Antiferromagnetic-ferromagnetic exchange coupling is known for its pinning effect on the magnetic hard layer through coercivity enhancement or exchange bias. This study reports its effect on controlling perpendicular magnetization in the soft magnetic regime. In a series of Ni 78Fe 22(Py)/Mn bilayers, we demonstrate that the magnetization, coercivity, and thermal stability of perpendicular anisotropy can be controlled by varying the thicknesses of the Py and Mn layers, based on the competition between the in-plane anisotropy of the Py layer and the out-of-plane-oriented Py-Mn exchange coupling. This offers a new possibility for the design of magnetic free layers in perpendicular-based magnetic logical devices.",
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Extending the control of antiferromagnetic-ferromagnetic exchange coupling on perpendicular magnetization into the soft magnetic regime. / Jih, Nae Yeou; Wang, Bo-Yao; Chan, Yuet Loy; Wei, Der Hsin; Lin, Minn Tsong.

In: Applied Physics Express, Vol. 5, No. 6, 063008, 01.06.2012.

Research output: Contribution to journalArticle

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AU - Jih, Nae Yeou

AU - Wang, Bo-Yao

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AU - Lin, Minn Tsong

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AB - Antiferromagnetic-ferromagnetic exchange coupling is known for its pinning effect on the magnetic hard layer through coercivity enhancement or exchange bias. This study reports its effect on controlling perpendicular magnetization in the soft magnetic regime. In a series of Ni 78Fe 22(Py)/Mn bilayers, we demonstrate that the magnetization, coercivity, and thermal stability of perpendicular anisotropy can be controlled by varying the thicknesses of the Py and Mn layers, based on the competition between the in-plane anisotropy of the Py layer and the out-of-plane-oriented Py-Mn exchange coupling. This offers a new possibility for the design of magnetic free layers in perpendicular-based magnetic logical devices.

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